Effect of temperature on stability behaviour of functionally graded spherical panel

In the present article, stability of functionally graded spherical panel under thermal environment is examined. The effective material properties are evaluated through Voigt's micromechanical model and continuous gradation is achieved using power-law distribution of the volume fraction of constituents. In addition, material properties are taken as temperature dependent. Finite element solutions are obtained through commercially available tool ANSYS using an eight node serendipity element. The linear eigenvalue buckling problem is solved using Block Lanczos method. Comparison study is made with the available published literatures. Finally, the effect of different geometry and material parameters such as thickness ratio, curvature ratio and power-law index on the critical buckling temperature of functionally graded spherical shell panel under thermal environment is demonstrated.